package com.example.big_event.controller;

import ch.qos.logback.core.util.StringUtil;
import com.example.big_event.pojo.Result;
import com.example.big_event.pojo.User;
import com.example.big_event.service.UserService;
import com.example.big_event.utils.JwtUtil;
import com.example.big_event.utils.Md5Util;
import com.example.big_event.utils.ThreadLocalUtil;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;


    @PostMapping("/register")
    public Result register(String username, String password){

        //判断字符长度条件
        if(username!=null&&username.length()>=5&&username.length()<=16&&
                password!=null&&password.length()>=5&&password.length()<=16) {

            //查询用户
            //然后注册
            User u = userService.findByUserName(username);
            if (u == null) {
                //没有占有，则注册
                userService.register(username, password);
                return Result.success();
            } else {
                return Result.error("用户名已被占用");
            }
        }else{
            return Result.error("参数不合法zwt");
        }

    }
    @PostMapping("/login")
    public  Result<String> login(String username, String password) {
        //判断字符长度条件
        if (username != null && username.length() >= 5 && username.length() <= 16 &&
                password != null && password.length() >= 5 && password.length() <= 16) {
            //根据用户名查询用户是否存在
            User loginUser = userService.findByUserName(username);
            //判断用户是否存在
            if(loginUser==null){
                return Result.error("用户名错误");
            }
            //判断密码是否正确
            if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
                //登录成功
                Map<String,Object> claims=new HashMap<>();
                claims.put("id",loginUser.getId());
                claims.put("username",loginUser.getUsername());


                //登录成功返回token
                String token=JwtUtil.genToken(claims);
                return  Result.success(token);

            }
            return  Result.error("密码错误");
        }
        return Result.error("参数不合法");
    }


    @GetMapping("/userInfo")
    public  Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
        //根据用户名查询用户
        //Map<String,Object> map=JwtUtil.parseToken(token);
        //String username=(String) map.get("username");

        Map<String,Object> map= ThreadLocalUtil.get();
        String username=(String) map.get("username");
        User user=userService.findByUserName(username);
        return Result.success(user);
    }

    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }


    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){

        userService.updateAvatar(avatarUrl);
        return Result.success();
    }

    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String,String> params){
        //校验参数
        String oldPwd=params.get("old_pwd");
        String newPwd=params.get("new_pwd");
        String rePwd=params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        //验证密码是否正确
        Map<String ,Object>map= ThreadLocalUtil.get();
        String username=(String)map.get("username");
        User loginUser= userService.findByUserName(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码不正确");
        }
        //验证newPwd和rePwd是否一样
        if(!rePwd.equals(newPwd)){
            return Result.error("两次密码填写不一致");
        }


        //调用service完成密码更新
        userService.updatePwd(newPwd);
        return Result.success();
    }

}
